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Re: [Xen-devel] [PATCH] xen: preserve native TSC speed during migration between identical hosts



On Mon, May 29, Jan Beulich wrote:

> Finally I don't think a host wide option will do. If it is to be of use
> (considering that it used wrong may break applications), it needs
> to be per-domain, and its value needs to be migrated (perhaps
> in the form of a low/high pair of TSC frequency values).

How is it supposed to be propagated from one host to another?

With the global option one can unconditionally receive a domU and
preserve "native performance" in case of tsc_mode=default. With a
per-domU option one has to know upfront.


Olaf

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